Dog Whistle Ultrasonic Dog Training Whistles with Adjustable Frequencies Bark Control Devices for Dogs 2PCS

Package Includes: 2 x Dog Whistles • The dog whistles allows you to easily train your dog/puppy with unlimitcommands, such as stop barking, sit down, sit down and lie down, recall, go to toilet training and so on. • Adjustable frequency: different dogs have different responses to different frequencies. When you turn, the dog whistles will generate various fund frequencies between 5.4 KHz and 12.8 KHz. , But it may not be important to human hearing. • Training: Turn the screw inward or extend until your dog shows the strongest response to adjust the frequency. By finding the right frequency, our dog whistles can ensure that your dog obeys basic skills after training. • Dog whistles: The dog whistles is made of heavy metal and hard plastic, with a compact design and a free black strap lanyard. It will not harm your dog's hearing, nors will it cause harm to our humans. • Tip: The sound of the dog flutes will not be heavy, but quieter than you think. Many people can't hear the whistles, but dogs can. Dogs are far more sensitive to this frequency than humans. do not worry